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rename smpi::Process to smpi::ActorExt
[simgrid.git] / src / smpi / internals / smpi_actor.cpp
1 /* Copyright (c) 2009-2018. The SimGrid Team. All rights reserved.          */
2
3 /* This program is free software; you can redistribute it and/or modify it
4  * under the terms of the license (GNU LGPL) which comes with this package. */
5
6 #include "src/smpi/include/smpi_actor.hpp"
7 #include "mc/mc.h"
8 #include "smpi_comm.hpp"
9 #include "src/mc/mc_replay.hpp"
10 #include "src/msg/msg_private.hpp"
11 #include "src/simix/smx_private.hpp"
12
13 #if HAVE_PAPI
14 #include "papi.h"
15 extern std::string papi_default_config_name;
16 #endif
17
18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_process, smpi, "Logging specific to SMPI (kernel)");
19
20 namespace simgrid {
21 namespace smpi {
22
23 using simgrid::s4u::Actor;
24 using simgrid::s4u::ActorPtr;
25
26 ActorExt::ActorExt(ActorPtr actor, simgrid::s4u::Barrier* finalization_barrier)
27     : finalization_barrier_(finalization_barrier), actor_(actor)
28 {
29   mailbox_         = simgrid::s4u::Mailbox::by_name("SMPI-" + std::to_string(actor_->get_pid()));
30   mailbox_small_   = simgrid::s4u::Mailbox::by_name("small-" + std::to_string(actor_->get_pid()));
31   mailboxes_mutex_ = xbt_mutex_init();
32   timer_           = xbt_os_timer_new();
33   state_           = SmpiProcessState::UNINITIALIZED;
34   if (MC_is_active())
35     MC_ignore_heap(timer_, xbt_os_timer_size());
36
37 #if HAVE_PAPI
38   if (not simgrid::config::get_value<std::string>("smpi/papi-events").empty()) {
39     // TODO: Implement host/process/thread based counters. This implementation
40     // just always takes the values passed via "default", like this:
41     // "default:COUNTER1:COUNTER2:COUNTER3;".
42     auto it = units2papi_setup.find(papi_default_config_name);
43     if (it != units2papi_setup.end()) {
44       papi_event_set_    = it->second.event_set;
45       papi_counter_data_ = it->second.counter_data;
46       XBT_DEBUG("Setting PAPI set for process %li", actor->get_pid());
47     } else {
48       papi_event_set_ = PAPI_NULL;
49       XBT_DEBUG("No PAPI set for process %li", actor->get_pid());
50     }
51   }
52 #endif
53 }
54
55 ActorExt::~ActorExt()
56 {
57   if (comm_self_ != MPI_COMM_NULL)
58     simgrid::smpi::Comm::destroy(comm_self_);
59   if (comm_intra_ != MPI_COMM_NULL)
60     simgrid::smpi::Comm::destroy(comm_intra_);
61   xbt_os_timer_free(timer_);
62   xbt_mutex_destroy(mailboxes_mutex_);
63 }
64
65 void ActorExt::set_data(int* argc, char*** argv)
66 {
67   instance_id_                   = std::string((*argv)[1]);
68   comm_world_                    = smpi_deployment_comm_world(instance_id_);
69   simgrid::s4u::Barrier* barrier = smpi_deployment_finalization_barrier(instance_id_);
70   if (barrier != nullptr) // don't overwrite the current one if the instance has none
71     finalization_barrier_ = barrier;
72
73   static_cast<simgrid::msg::ActorExt*>(actor_->get_impl()->get_user_data())->data = this;
74
75   if (*argc > 3) {
76     memmove(&(*argv)[0], &(*argv)[2], sizeof(char*) * (*argc - 2));
77     (*argv)[(*argc) - 1] = nullptr;
78     (*argv)[(*argc) - 2] = nullptr;
79   }
80   (*argc) -= 2;
81   argc_ = argc;
82   argv_ = argv;
83   // set the process attached to the mailbox
84   mailbox_small_->set_receiver(actor_);
85   XBT_DEBUG("<%ld> SMPI process has been initialized: %p", actor_->get_pid(), actor_.get());
86 }
87
88 /** @brief Prepares the current process for termination. */
89 void ActorExt::finalize()
90 {
91   state_ = SmpiProcessState::FINALIZED;
92   XBT_DEBUG("<%ld> Process left the game", actor_->get_pid());
93
94   // This leads to an explosion of the search graph which cannot be reduced:
95   if (MC_is_active() || MC_record_replay_is_active())
96     return;
97   // wait for all pending asynchronous comms to finish
98   finalization_barrier_->wait();
99 }
100
101 /** @brief Check if a process is finalized */
102 int ActorExt::finalized()
103 {
104   return (state_ == SmpiProcessState::FINALIZED);
105 }
106
107 /** @brief Check if a process is initialized */
108 int ActorExt::initialized()
109 {
110   // TODO cheinrich: Check if we still need this. This should be a global condition, not for a
111   // single process ... ?
112   return (state_ == SmpiProcessState::INITIALIZED);
113 }
114
115 /** @brief Mark a process as initialized (=MPI_Init called) */
116 void ActorExt::mark_as_initialized()
117 {
118   if (state_ != SmpiProcessState::FINALIZED)
119     state_ = SmpiProcessState::INITIALIZED;
120 }
121
122 void ActorExt::set_replaying(bool value)
123 {
124   if (state_ != SmpiProcessState::FINALIZED)
125     replaying_ = value;
126 }
127
128 bool ActorExt::replaying()
129 {
130   return replaying_;
131 }
132
133 void ActorExt::set_user_data(void* data)
134 {
135   data_ = data;
136 }
137
138 void* ActorExt::get_user_data()
139 {
140   return data_;
141 }
142
143 ActorPtr ActorExt::get_actor()
144 {
145   return actor_;
146 }
147
148 /**
149  * \brief Returns a structure that stores the location (filename + linenumber) of the last calls to MPI_* functions.
150  *
151  * \see smpi_trace_set_call_location
152  */
153 smpi_trace_call_location_t* ActorExt::call_location()
154 {
155   return &trace_call_loc_;
156 }
157
158 void ActorExt::set_privatized_region(smpi_privatization_region_t region)
159 {
160   privatized_region_ = region;
161 }
162
163 smpi_privatization_region_t ActorExt::privatized_region()
164 {
165   return privatized_region_;
166 }
167
168 MPI_Comm ActorExt::comm_world()
169 {
170   return comm_world_ == nullptr ? MPI_COMM_NULL : *comm_world_;
171 }
172
173 smx_mailbox_t ActorExt::mailbox()
174 {
175   return mailbox_->get_impl();
176 }
177
178 smx_mailbox_t ActorExt::mailbox_small()
179 {
180   return mailbox_small_->get_impl();
181 }
182
183 xbt_mutex_t ActorExt::mailboxes_mutex()
184 {
185   return mailboxes_mutex_;
186 }
187
188 #if HAVE_PAPI
189 int ActorExt::papi_event_set()
190 {
191   return papi_event_set_;
192 }
193
194 papi_counter_t& ActorExt::papi_counters()
195 {
196   return papi_counter_data_;
197 }
198 #endif
199
200 xbt_os_timer_t ActorExt::timer()
201 {
202   return timer_;
203 }
204
205 void ActorExt::simulated_start()
206 {
207   simulated_ = SIMIX_get_clock();
208 }
209
210 double ActorExt::simulated_elapsed()
211 {
212   return SIMIX_get_clock() - simulated_;
213 }
214
215 MPI_Comm ActorExt::comm_self()
216 {
217   if (comm_self_ == MPI_COMM_NULL) {
218     MPI_Group group = new Group(1);
219     comm_self_      = new Comm(group, nullptr);
220     group->set_mapping(actor_, 0);
221   }
222   return comm_self_;
223 }
224
225 MPI_Comm ActorExt::comm_intra()
226 {
227   return comm_intra_;
228 }
229
230 void ActorExt::set_comm_intra(MPI_Comm comm)
231 {
232   comm_intra_ = comm;
233 }
234
235 void ActorExt::set_sampling(int s)
236 {
237   sampling_ = s;
238 }
239
240 int ActorExt::sampling()
241 {
242   return sampling_;
243 }
244
245 void ActorExt::init(int* argc, char*** argv)
246 {
247
248   if (smpi_process_count() == 0) {
249     xbt_die("SimGrid was not initialized properly before entering MPI_Init. Aborting, please check compilation process "
250             "and use smpirun\n");
251   }
252   if (argc != nullptr && argv != nullptr) {
253     simgrid::s4u::ActorPtr proc = simgrid::s4u::Actor::self();
254     proc->get_impl()->context_->set_cleanup(&MSG_process_cleanup_from_SIMIX);
255
256     char* instance_id = (*argv)[1];
257     try {
258       int rank = std::stoi(std::string((*argv)[2]));
259       smpi_deployment_register_process(instance_id, rank, proc);
260     } catch (std::invalid_argument& ia) {
261       throw std::invalid_argument(std::string("Invalid rank: ") + (*argv)[2]);
262     }
263
264     // cheinrich: I'm not sure what the impact of the SMPI_switch_data_segment on this call is. I moved
265     // this up here so that I can set the privatized region before the switch.
266     ActorExt* process = smpi_process_remote(proc);
267     if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
268       /* Now using the segment index of this process  */
269       process->set_privatized_region(smpi_init_global_memory_segment_process());
270       /* Done at the process's creation */
271       SMPI_switch_data_segment(proc);
272     }
273
274     process->set_data(argc, argv);
275   }
276   xbt_assert(smpi_process(), "smpi_process() returned nullptr. You probably gave a nullptr parameter to MPI_Init. "
277                              "Although it's required by MPI-2, this is currently not supported by SMPI. "
278                              "Please use MPI_Init(&argc, &argv) as usual instead.");
279 }
280
281 int ActorExt::get_optind()
282 {
283   return optind;
284 }
285 void ActorExt::set_optind(int new_optind)
286 {
287   optind = new_optind;
288 }
289
290 } // namespace smpi
291 } // namespace simgrid